Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Dependent variables for refusing tokens and rewards
| Chimpanzee behaviour | Token variables | Reward variables |
|---|---|---|
| Refuse | Does not accept token w/in 10 s | Does not accept food w/in 5 s |
| Ignore | Does not return token w/in 30 s | Does not eat food for 30 s |
| Share | Allows partner to take token (no protest) | Allows partner to take food (no protest) |
| Reject | Push out token | Push away food |
